drm/panel: simple: Assign data from panel_dpi_probe() correctly

In the function panel_simple_probe() the pointer panel->desc is
assigned to the passed pointer desc. If function panel_dpi_probe()
is called panel->desc will be updated, but further on only desc
will be evaluated. So update the desc pointer to be able to use
the data from the function panel_dpi_probe().

Fixes: 4a1d0dbc8332 ("drm/panel: simple: add panel-dpi support")
Signed-off-by: Christoph Niedermaier <cniedermaier@dh-electronics.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
To: dri-devel@lists.freedesktop.org
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Marek Vasut <marex@denx.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220201110153.3479-1-cniedermaier@dh-electronics.com

diff --git a/drivers/gpu/drm/panel/panel-simple.c b/drivers/gpu/drm/panel/panel-simple.c
index 9e46db5e359c7a16f563476f2528b81d6c77db7b..3c08f9827acf1935efbe0ee0f61c07a6d246cce0 100644 (file)
--- a/drivers/gpu/drm/panel/panel-simple.c
+++ b/drivers/gpu/drm/panel/panel-simple.c
@@ -588,6 +588,7 @@ static int panel_simple_probe(struct device *dev, const struct panel_desc *desc)
                err = panel_dpi_probe(dev, panel);
                if (err)
                        goto free_ddc;
+               desc = panel->desc;
        } else {
                if (!of_get_display_timing(dev->of_node, "panel-timing", &dt))
                        panel_simple_parse_panel_timing_node(dev, panel, &dt);